Revisiting with Updated Hardware an Old Spectroscopic Technique: Circularly Polarized Luminescence

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Abstract:

Among the various chiroptical spectroscopic techniques available today, circularly polarized luminescence (CPL) plays a minor role and is still used by a limited number of specialists. The cost of the few commercial instruments available and the complexity of homemade apparatuses have strongly limited the widespread application of this technique. New technological approaches, such as the use of light-emitting diode (LED) sources, may significantly simplify the required instrumentation and encourage new potential users. Calibration procedure and the quantitative determination of CPL and total luminescence intensity as well as the corresponding g ratio are described.

Keywords: CAMPHORQUINONE; CIRCULARLY POLARIZED LUMINESCENCE; CPL; LEDS; LIGHT-EMITTING DIODES

Document Type: Short Communication

DOI: http://dx.doi.org/10.1366/000370210793561709

Affiliations: 1: Dipartimento di Scienze Biomediche e Biotecnologie, Università di Brescia, Viale Europa 11, 25123 Brescia, Italy; Jasco Corporation, 2967–5 Ishikawa-cho, Hachioji-shi, Tokyo 192-8537, Japan. ettore.castiglioni@jasco-europe.com 2: Dipartimento di Scienze Biomediche e Biotecnologie, Università di Brescia, Viale Europa 11, 25123 Brescia, Italy; CNISM Consorzio Nazionale Interuniversitario per le Scienze Fisiche della Materia, Via della Vasca Navale, 84, 00146 Roma, Italy

Publication date: December 1, 2010

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